diff options
| -rw-r--r-- | activesupport/lib/active_support/dependencies.rb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/dependencies.rb b/activesupport/lib/active_support/dependencies.rb index ab96538fdf..ad34567fb6 100644 --- a/activesupport/lib/active_support/dependencies.rb +++ b/activesupport/lib/active_support/dependencies.rb @@ -460,6 +460,25 @@ module ActiveSupport #:nodoc: # const_missing must be due to from_mod::const_name, which should not # return constants from from_mod's parents. begin + # Since Ruby does not pass the nesting at the point the unknown + # constant triggered the callback we cannot fully emulate constant + # name lookup and need to make a trade-off: we are going to assume + # that the nesting in the body of Foo::Bar is [Foo::Bar, Foo] even + # though it might not be. Counterexamples are + # + # class Foo::Bar + # Module.nesting # => [Foo::Bar] + # end + # + # or + # + # module M::N + # module S::T + # Module.nesting # => [S::T, M::N] + # end + # end + # + # for example. return parent.const_missing(const_name) rescue NameError => e raise unless e.missing_name? qualified_name_for(parent, const_name) |